> It could be a good idea for JSF to store the objects in the server side and
> just submit an
> identifier to with the html. Once the request is received to the server JSF
> can indentify the
> referenced object by the identifier.
We did exactly this.
On Wed, 16 Mar 2005 21:34:26 +0000, Kostas Karadamoglou
<[EMAIL PROTECTED]> wrote:
> In you previous message you said:
>
> We elected to keep
> everything in memory since we don't have that many concurrent users.
>
> I didn't understand it can you explain it?
>
> It could be a good idea for JSF to store the objects in the server side and
> just submit an
> identifier to with the html. Once the request is received to the server JSF
> can indentify the
> referenced object by the identifier.
>
>
> Heath Borders wrote:
>
> >Depending on the size of your object graph, you might run into
> >performance problems doing that. It really depends on your situation,
> >but that's something you could definitely try. We elected to keep
> >everything in memory since we don't have that many concurrent users.
> >
> >
> >On Wed, 16 Mar 2005 19:37:20 +0000, Kostas Karadamoglou
> ><[EMAIL PROTECTED]> wrote:
> >
> >
> >>and what if my bean that I want to convert includes another nested objects?
> >>
> >>Is it a good idea to use libraries that serialize and deserialize object
> >>from and to xml?
> >>
> >>Heath Borders wrote:
> >>
> >>
> >>
> >>>getAsString converts the Object to a String and getAsObject converts
> >>>the String back to an Object.
> >>>
> >>>The behaviour should be like this:
> >>>
> >>>MyBean foo = // get a bean from somewhere
> >>>Converter converter = // get a converter that converts MyBeans.
> >>>String fooString = converter.getAsString(foo);
> >>>MyBean bar = converter.getAsObject(fooString);
> >>>
> >>>foo.equals(bar); // should return true.
> >>>
> >>>
> >>>Basically, the converter needs to convert an object to a String that
> >>>can be used later to recreate that Object. You can do this many
> >>>different ways. We have a unique id for every type of object and
> >>>store all objects in session. Our converter just returns that unique
> >>>id and pulls the objects from session using a Map.
> >>>
> >>>
> >>>On Wed, 16 Mar 2005 16:49:25 +0000, Kostas Karadamoglou
> >>><[EMAIL PROTECTED]> wrote:
> >>>
> >>>
> >>>
> >>>
> >>>>Hi again thank you for your reply,
> >>>>I am new to JSF so I need some information on how to create converters.
> >>>>Do you know any site one the internet that has such information?
> >>>>
> >>>>I have already looked on the internet but I only foound converters for
> >>>>String not for
> >>>>other classes.
> >>>>
> >>>>Can you give directions on how to implement the getAsString and
> >>>>getAsObject ?
> >>>>
> >>>>
> >>>>Heath Borders wrote:
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>Yes, you must write a converter for Category.
> >>>>>
> >>>>>The object you pass as the 'value' of your SelectItem objects should
> >>>>>be of a type that is assignment-compatible with the property you've
> >>>>>bound to your component.
> >>>>>
> >>>>>
> >>>>>On Wed, 16 Mar 2005 10:05:13 +0000, Kostas Karadamoglou
> >>>>><[EMAIL PROTECTED]> wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>>Hello I have a problem with the selectItems tag
> >>>>>>Bellow I have the method that brings the value attribute of the tag:
> >>>>>>
> >>>>>> public List getCategories() {
> >>>>>> ArrayList retValue = new ArrayList();
> >>>>>> retValue.add(new SelectItem("","Choose a category..."));
> >>>>>> for(Iterator iter=this.eventRegistry.getCategories().iterator();
> >>>>>>iter.hasNext();){
> >>>>>> Category category=(Category)iter.next();
> >>>>>> retValue.add(new SelectItem(category,category.getTitle()));
> >>>>>> }
> >>>>>> return retValue;
> >>>>>> }
> >>>>>>
> >>>>>>When I run the web application I get the following exception:
> >>>>>>
> >>>>>>javax.faces.FacesException: There is no registered converter for class
> >>>>>>essex.cc403.hbeans.Category
> >>>>>>
> >>>>>>Do I really need to write a converter for the Category? Can I avoid it?
> >>>>>>Can you axplain me what I have to do because I am not familiar with JSF
> >>>>>>
> >>>>>>Thank you in advanec, kostas
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>
> >>>>
> >>>
> >>>
> >>>
> >>>
> >>
> >>
> >
> >
> >
> >
>
>
--
-Heath Borders-Wing
[EMAIL PROTECTED]
